Senior Threat Detection Engineer

VulnU; United States; Remote; USD 108,000 - 169,000; Full time

Benefits offered by this job

Health insurance

401(k) and equity

Paid time off

Remote work

Job summary

Cribl is seeking an experienced security professional to own detection engineering, threat hunting, and incident response as part of an internal security team. You will design detections in code, map to MITRE ATT&CK, and drive improvements across log pipelines and SIEM integrations.

You’ll lead investigations during an initial IR rotation, collaborate with Product Security, IT, and Legal, and help ensure healthy telemetry pipelines.

Qualifications

• 5+ years in security operations, with hands-on time in detection engineering, threat hunting, or incident response.
• Experience writing and maintaining detections as code in a modern SIEM.
• Strong Python skills and comfort with Git-based workflows, code review, and CI/CD.
• Strong in KQL for writing detection queries.
• Working knowledge of MITRE ATT&CK and how to use it for coverage analysis.
• Hands-on experience with log pipelines: getting data in, parsing it, and fixing it when it breaks.

Responsibilities

• Design, build, test, and tune detections as code (KQL) through a GitOps workflow, including testing and automated deployment.
• Map detections to MITRE ATT&CK and analyze coverage gaps.
• Review community and vendor rule releases to decide adoption or adaptation.
• Cut alert noise by tuning/retiring rules and tracking quality metrics.
• Plan and run hypothesis-driven hunts across cloud, SaaS, identity, endpoint, and corporate telemetry.
• Turn hunt findings into durable detections, documentation, and backlog items.
• Participate in incident response rotation, triage, scope, contain, and investigate incidents.

Skills

Threat hunting

Detection engineering

Incident response

Python

KQL

Git-based workflows

Tools

Sigma rules

Cribl Stream

GitHub Actions

CI/CD

SIEM

Adversary emulation tools

Job description

Join the company that’s building the telemetry infrastructure for the AI era. At Cribl, we partner with IT and Security teams at many of the world’s biggest enterprises, including half of the Fortune 100, to bridge the gap between AI ambition and infrastructure reality. As the AI Platform for Telemetry, we give customers the choice, control, and flexibility to manage and analyze telemetry for both humans and agents, so they can build what’s next.We’re one of the fastest‐growing private companies and a leading player in a massive, fast‐moving market. With a global workforce, we’re remote‐first and grounded in a simple idea: software is a people business. Cribl is the place where curious, collaborative people can do their best work, grow fast, and bring their full selves to the herd.Why You’ll Love This RoleCribl builds telemetry infrastructure for some of the world's biggest security teams. Now we're looking for someone to protect Cribl itself. You'll join Cribl's internal security team, Team Alpine, to run detection as code. Our team runs a detection as code pipeline where rules live in Git, are tested in CI, and deploy to our SIEM automatically. AI agents watch for coverage gaps and help review every change.This is a hands-on senior role covering the whole detection lifecycle. You'll hunt for threats nobody has written a rule for yet, turn what you find into detections, and keep the log pipelines behind those detections healthy. For the first [6–12] months you'll also be a core part of our incident response rotation while we build out that function. You'll lead investigations, and what you learn will feed straight back into the detections.If you want your work to show up in production quickly, and you like owning the data as well as the rules, this role is for you. You will partner closely with Product Security, IT, and Legal teams, and report to the Sr. Director, Security Engineering and Operations under the CISO.As An Active Member Of Our Team, You Will...Detection EngineeringDesign, build, test, and tune detections as code (KQL) through a GitOps workflow: issue, pull request, unit and back-testing, then automated deploymentMap detections to MITRE ATT CK, find coverage gaps, and decide where to invest next based on our threat modelReview new community and vendor rule releases, such as Sigma, and decide what to adopt, adapt, or skipCut alert noise by tuning, retiring rules that no longer earn their place, and tracking detection quality metricsThreat HuntingPlan and run hypothesis-driven hunts across cloud, SaaS, identity, endpoint, and corporate infrastructure telemetryUse adversary emulation to generate test events for detections that have nothing to fire on yetTurn hunt findings into durable detections, documentation, and backlog itemsIncident Response (initial [6–12] months)Take part in the IR rotation: triage, scope, contain, and investigate security incidents from first alert to closureRun retrospectives and turn the lessons into new detections, playbook updates, and fixes to visibility gapsWrite and maintain runbooks so others on the team can respond consistentlyDetection Infrastructure Log PipelinesAssist in ownership of the health of security log flow: onboard new sources, maintain parsing and normalization, and monitor for dropped, delayed, or malformed dataAssist and Build and maintain data pipelines with Cribl Stream to route, enrich, and reduce telemetry before it reaches the SIEMMaintain the CI/CD and automation behind the detection program, including GitHub Actions, SIEM API integrations, and AI-assisted gap analysis and PR reviewAcross the TeamWork independently, and design the processes, standards, and tools that help others work wellMentor teammates through code review, pairing, and clear documentationWork with IT, Infrastructure, Engineering, and GRC to close visibility gaps and improve detection coverageThis position will require stand-by, on-call, or off-hours dutiesIf You’ve Got It - We Want It[5+] years in security operations, with significant hands-on time in detection engineering, threat hunting, or incident responseExperience writing and maintaining detections as code in a modern SIEMStrong Python skills and comfort with Git-based workflows, code review, and CI/CDStrong in KQL for writing detection queriesWorking knowledge of MITRE ATT CK and how to use it for coverage analysis, not just labelingExperience investigating incidents in cloud (AWS, GCP, and/or Azure), SaaS, and identity providersHands-on experience with log pipelines: getting data in, parsing it, and fixing it when it breaksThe judgment to separate a real signal from noise, and to know when to escalateClear writing for both technical and non-technical audiences: incident summaries, runbooks, detection docsUses AI as a routine part of engineering work, with concrete examples of how it has changed how you build, test, or investigateBonus: experience with Cribl Stream or other telemetry pipeline toolsBonus: experience with Sigma rules, adversary emulation (Atomic Red Team, Caldera, or similar), or purple teamingBonus: experience building agentic or AI-assisted workflows for security operationsBonus: certifications such as GCIH,GCDA, or equivalent experience#LI-KJ1#LI-RemoteThe salary for this role is dependent on geographic location and will be based on the individual candidate's job-related knowledge, skills, and experience.In addition to base salary, for sales and some sales-adjacent roles, employees are eligible to earn incentive compensation (commission). For all other roles, employees are eligible to participate in the Cribl Corporate Bonus Program.In addition to a competitive salary, Cribl also offers a generous benefits package which includes health, dental, vision, short-term disability, and life insurance, paid holidays and paid time off, a fertility treatment benefit, 401(k), and equity.Base Salary Range$108,000 $169,000 USD